Home > Developer > Web Develop

HTML <radio> radio Button control label usage resolution and how to set default check

Source: Internet
Author: User
Tags control label html form
Developer on Alibaba Coud: Build your first app with APIs, SDKs, and tutorials on the Alibaba Cloud. Read more ＞

The Radio object represents a radio button in an HTML form. <input type= "Radio" in an HTML form > A Radio object is created every time it appears. A radio button is one of a set of mutually exclusive option buttons. When a button is selected, the previously selected button becomes unchecked. When the radio button is selected or unchecked, the button triggers the onclick event handle. You can access the Radio object by traversing the elements[] array of the form, or by using document.getElementById (). collected and collated by Www.169it.com

One, radio button control syntax

1

<input name= "Fruit" type= "Radio" value= "/>

Using the HTML input tag, name is a custom, type "Radio" form.

Second, radio radio button code example

1, HTML code snippet:

1

2

3

4

5

6

7

8

<form action= ""  method= "get";

Do you like fruit best? <br /><br />

<label><input name= "Fruit"  type= " Radio " value=" " /> Apple </label>

<label><input name=" Fruit "  type= "Radio"  value= ""  /> peach </label>

<label><input  Name= "Fruit"  type= "Radio"  value= ""  /> banana </label>

<label>< Input name= "Fruit"  type= "Radio"  value= ""  /> pear </label>

<label ><input name= "Fruit"  type= "Radio"  value= ""  /> other </label>

2. Example code fragment two (default Check setting example):

1

2

3

<input type= "Radio" name= "Identity" value= "students" checked= "checked"/> Students

<input type= "Radio" name= "Identity" value= "teacher"/> Teacher

<input type= "Radio" name= "Identity" value= "Administrator"/> Administrator

In the code example two, checked= "checked" means the default check setting.

3. code example three (JS Operation Radio):

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21st

22

23

24

25

26

27

28

29

30

<! DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01 transitional//en" >

<meta http-equiv= "Content-type" content= "text/html; CHARSET=GBK ">

<script>

<!--

Check 2 returned is also 1, find the first ID for that value of the DOM, popup 1

function Getvbyid () {Alert (document.getElementById (' test11 '). value);}

function Getvbyname () {

var tt = document.getelementsbyname (' test11 ');

for (var iIndex = 0; IIndex < tt.length; iindex++)

{

if (tt[iindex].checked)

{

alert (Tt[iindex].value);

Break

}

}

};

-

</script>

<title>http://www.169it.com</title>

<body>

<input type= "Radio" id= "test11" name= "test11" value= "1"/> Test 1

<input type= "Radio" id= "test11" name= "test11" value= "2"/> Test 2

<input type= "button" value= "Btn_byid" onclick= "Getvbyid ()"/>

<input type= "button" value= "Btn_byname" onclick= "Getvbyname ()"/>

</body>
    • Article Source:HTML <radio> radio button control label usage resolution and how to set the default check

HTML <radio> radio Button control label usage resolution and how to set default check

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
html form radio button html form radio button radio button html php how to set resolution how to get radio button value in php without submit radio button java radio button checked

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

What's Trending
Top 10 Tags
datastax versions naming convention zookeeper client class definition md5 microsoft sql server 2005 data structures exception handling error handling
Top 10 Keywords
microsoft download center down wordpress address url site address url wordpress address url windows installer 4 0 download 302 not found web address url definition site address url wordpress db2 integer mac os installation step by step pdf abbreviation for return

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

Get Started for Free

  • Sales Support

    1 on 1 presale consultation

    Chat Contact Sales

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

    Open a Ticket

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.

    Learn More